.header{
    padding-top: 0.2rem;
    height: 0.8rem;
    width: 100%;
}
.header img{
    margin-left: 0.2rem;
    width: 40%;
}
.header input{
    background: #ccc;
    height: 0.6rem;
    border-radius: 0.4rem;
    text-align: center;
    margin-left: 0.5rem;
    width: 50%;
    font-size: 0.3rem;
}